Roll changing device and working roll assembly
By designing a roller replacement device with a lift truck and a connecting structure, the mechanized replacement of the work roller of the Senkimir rolling mill is realized, solving the problems of labor and safety hazards, and improving the replacement efficiency and safety.
Patent Information
- Application Number
- CN202422036774.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In the prior art, it is laborious to replace the work roller of the Senkimir type rolling mill and there is a safety hazard for burns and smashes.
A roller replacement device is designed, including a lifting cart, a telescopic structure and a connecting structure. The mechanized replacement of the work roller is achieved through the clamping and mating of the annular groove to avoid close operation by workers.
It realizes convenient and rapid replacement of work rollers, reducing the safety risks of workers being scalded by emulsion steam or falling equipment.
Smart Images
Figure CN223234722U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of roll changing equipment, and in particular relates to a roll changing device and a working roll assembly. Background Art
[0002] The Sendkimir mill is a reversing rolling mill specifically designed for rolling hard-to-form metal sheets such as stainless steel, silicon steel, and alloy steel. The rolls of a Sendkimir mill are arranged in a tower shape, symmetrically positioned within the mill frame's quincunx-shaped holes. The upper and lower work rolls rest on two first intermediate rolls, respectively. The two pairs of first intermediate rolls are supported by three second intermediate rolls, while the six second intermediate rolls are supported by eight support rolls fixed to the outer rings of the quincunx-shaped holes. In the Sendkimir mill's roll system, the second intermediate rolls are connected to the mill frame's drive mechanism. The second intermediate rolls and the first intermediate rolls, as well as the first intermediate rolls and the work rolls, form a frictional fit. When the first intermediate rolls are driven by the second intermediate rolls, the frictional force of the first intermediate rolls acts on the circumference of the work rolls, causing them to rotate and roll. Over time, the work rolls wear, reducing their rolling performance. At this point, the worn work rolls must be removed from the mill frame for replacement.
[0003] In existing technology, when work rolls need to be separated, the machine frame must be opened, the longitudinal spacing between the two work rolls must be increased, and the work rolls must be manually grasped and pulled out of the machine frame. However, manual separation of the work rolls is laborious and requires a close distance between the operator and the machine frame. This poses a safety hazard of burns from emulsion vapor and injuries from falling equipment during the replacement process. Summary of the Invention
[0004] The present application aims to at least to some extent solve the problem that separating the working rolls is laborious and poses safety risks such as burns and injuries. To this end, the present application provides a roll changing device and a working roll assembly.
[0005] The present application provides a roll changing device for replacing a working roll of a Sendkimer mill, wherein a peripheral wall of one end of the working roll is provided with an annular groove, and the roll changing device comprises:
[0006] A lifting trolley is provided with a lifting platform that can be raised or lowered;
[0007] A telescopic structure connected to the lifting platform and provided with a telescopic end that reciprocates and telescopes along the axial direction of the working roll;
[0008] A connecting structure is located between the telescopic end and the working roller. The connecting structure is provided with a connecting end and a clamping end. The connecting end is connected to the telescopic end. The clamping end is used to clamp the annular groove to clamp the working roller.
[0009] Optionally, the connection structure includes:
[0010] The strip portion, one end of which in the length direction forms the connecting end and is connected to the telescopic end;
[0011] The U-shaped portion is connected to the other end of the strip portion in the length direction and is spaced apart from the telescopic end. Both ends of the U-shaped portion form the clamping ends to be clamped on the peripheral wall of the annular groove.
[0012] Optionally, the strip portion includes:
[0013] A first section connected to the telescopic end, wherein the extension direction of the first section remains unchanged;
[0014] The second section is connected to a side of the first section away from the telescopic end, and an extension direction of the second section is bent.
[0015] Optionally, there is an angle between the length direction of the strip portion and the plane where the U-shaped portion is located.
[0016] Optionally, the connecting structure is a tubular structure.
[0017] Optionally, the length direction of the connecting structure is the axial direction of the working roll.
[0018] Optionally, the telescopic end is plug-connected to the connecting end.
[0019] Optionally, the telescopic structure includes a telescopic cylinder, which includes a cylinder seat and a telescopic rod telescopically inserted into the cylinder seat, and an end of the telescopic rod away from the cylinder seat forms the telescopic end.
[0020] Optionally, the telescopic structure is detachably connected to the lifting platform.
[0021] The present application provides a work roll assembly, comprising:
[0022] Roller changing device as described above;
[0023] The working roll of the Sendkimir rolling mill has a peripheral wall at one end provided with an annular groove for clamping with the clamping end.
[0024] The embodiments of the present application have at least the following beneficial effects:
[0025] For the work rolls of the Sendkimer mill that need to be replaced, an annular groove is provided on the circumferential wall of one end of the work roll. After the Sendkimer mill is opened and a gap is created between the work rolls, the lifting trolley in the roll changing device is moved close to the Sendkimer mill. The lifting platform of the lifting trolley is adjusted to position the telescopic structure of the roll changing device and the lifting platform. The telescopic end of the telescopic structure can reciprocate and extend along the axial direction of the work roll. The connecting structure of the roll changing device, connected to the telescopic end through the connecting end, can also reciprocate and extend along the axial direction of the work roll. The connecting structure is located between the telescopic end and the working roll, extending the working range of the telescopic end of the telescopic structure. The connecting end and the clamping end of the connecting structure are respectively connected to the telescopic end of the telescopic structure and the annular groove of the working roll. The reciprocating telescopic motion of the telescopic end of the telescopic structure can be transmitted to the connecting structure through the connecting end so that the connecting structure reciprocates along the axial direction of the working roll. The clamping end of the connecting structure is clamped in cooperation with the annular groove of the working roll, so that the working roll can reciprocate along its own axial direction with the connecting structure and be pulled out of the frame of the Sendkimer mill as the connecting structure is transported, thereby realizing the extraction of the working roll. The installation of the working roll can be carried out in a similar manner as described above. Mechanical replacement is used, and the replacement of the working roll is relatively convenient and fast. During the replacement process, the worker does not need to be too close to the Sendkimer mill, reducing the safety hazards of workers being scalded by emulsion steam or injured by falling equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 A schematic diagram of the usage status of a roller changing device provided in this application.
[0027] Figure 2 This is a schematic diagram of the connection structure provided in this application.
[0028] Figure 3 This is a schematic diagram of the telescopic structure provided in this application.
[0029] Explanation of the accompanying reference numerals: 1. Lifting trolley; 11. Lifting platform; 12. Lifting cylinder; 13. Bottom plate; 2. Telescopic structure; 21. Telescopic end; 211. Insert hole; 22. Cylinder seat; 23. Telescopic rod; 3. Connecting structure; 31. Connecting end; 32. Clamping end; 33. Strip portion; 331. First section; 332. Second section; 34. U-shaped portion; 10. Working roller; 101. Annular groove. DETAILED DESCRIPTION
[0030] In order to enable those skilled in the art to which this application belongs to understand this application more clearly, the technical solution of this application is described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0031] Figure 1 This is a schematic diagram of the use of a roller changing device provided in this application, refer to Figure 1It can be seen that the embodiment of the present application provides a roll changing device for replacing the working roll 10 of the Sendkimir mill. The peripheral wall of one end of the working roll 10 is provided with an annular groove 101. The roll changing device includes:
[0032] The lifting trolley 1 is provided with a lifting platform 11 that can be raised or lowered.
[0033] The telescopic structure 2 is connected to the lifting platform 11 and is provided with a telescopic end 21 that reciprocates and telescopes along the axial direction of the working roll 10 .
[0034] The connecting structure 3 is located between the telescopic end 21 and the working roll 10 . The connecting structure 3 is provided with a connecting end 31 and a clamping end 32 . The connecting end 31 is connected to the telescopic end 21 . The clamping end 32 is used to clamp the annular groove 101 to clamp the working roll 10 .
[0035] For the work roll 10 of the Sendkimer mill that needs to be replaced, an annular groove 101 is provided on the circumferential wall of one end of the work roll 10. After the Sendkimer mill is opened and a gap is created between the work rolls 10, the lifting trolley 1 in the roll changing device is moved close to the Sendkimer mill. The lifting platform 11 of the lifting trolley 1 is adjusted so that the telescopic structure 2 in the roll changing device, which is aligned with the lifting platform 11, is properly positioned, for example, flush with the bottom of the work roll 10. The telescopic end 21 of the telescopic structure 2 can reciprocate and extend along the axial direction of the work roll 10. Therefore, the connecting structure 3 in the roll changing device, connected to the telescopic end 21 via the connecting end 31, can also reciprocate and extend along the axial direction of the work roll 10. The connecting structure 3 is located between the telescopic end 21 and the work roll 10, extending the working range of the telescopic end 21 of the telescopic structure 2. The connecting end 31 and the clamping end 32 of the connecting structure 3 connect the telescopic end 21 of the telescopic structure 2 to the annular groove 101 of the work roll 10, respectively. The reciprocating telescopic motion of the telescopic end 21 of the telescopic structure 2 can be transmitted to the connecting structure 3 via the connecting end 31, causing the connecting structure 3 to reciprocate along the axial direction of the work roll 10. The clamping end 32 of the connecting structure 3 is tightly engaged with the annular groove 101 of the work roll 10, allowing the work roll 10 to reciprocate along its own axial direction with the connecting structure 3. As the connecting structure 3 is transported, the work roll 10 can be withdrawn from the stand of the Sendkimer mill, achieving withdrawal. The work roll 10 can be installed using a similar method as described above. Mechanical replacement of the work roll 10 is convenient and quick, and workers do not need to be too close to the Sendkimer mill during replacement, reducing the safety risks of workers being scalded by emulsion vapor or injured by falling equipment.
[0036] It should be noted that the roll gap between two adjacent work rolls 10 in a Sendkimer mill can be adjusted by installing a control structure, such as a hydraulic cylinder, on the mill frame. The two ends of the hydraulic cylinder can contact the top and bottom of the quincunx hole in the mill frame, respectively, for mounting the twenty rolls. The extension and retraction of the hydraulic cylinder can control the vertical distance between the quincunx hole, thereby varying the distance between the two work rolls 10 above and below the quincunx hole. The vertical distance between the quincunx holes refers to the distance between the top and bottom of the quincunx holes in the vertical direction. It should be noted that the structure used to control the vertical distance between the quincunx holes in a Sendkimer mill is not limited to the hydraulic cylinders described above. Alternatively, at least one hydraulic cylinder can be installed on the mill frame above the quincunx hole, and at least one hydraulic cylinder can be installed on the mill frame below the quincunx hole, with the horizontal symmetry plane of the quincunx hole serving as the boundary. The two hydraulic cylinders work together to control the vertical width of the quincunx hole. The drive mechanism is not limited to hydraulic cylinders, pneumatic cylinders, or rack-and-pinion mechanisms.
[0037] It should be noted that the twenty-high rolls, including the work roll 10, are horizontally arranged in a quincunx hole. A hinged door is installed at each end of the quincunx hole in the mill frame. The door's side closest to the quincunx hole is equipped with a thrust bearing corresponding to the work roll 10. The door opens to allow the work roll 10 to be replaced. When closed, the doors seal both ends of the quincunx hole, and the thrust bearings limit the axial position of the corresponding work roll 10, allowing the work roll 10 to continue rolling normally.
[0038] Figure 2 For the structural diagram of the connection structure provided in this application, refer to Figure 2 In some embodiments provided in this application, the length direction of the connecting structure 3 is the axial direction of the working roll 10.
[0039] The length direction of the connecting structure 3 is the axial direction of the working roll 10, which can effectively extend the distance between the telescopic end 21 and the working roll 10. The roll changing device can be used for roll changing in a Sendkimer mill where the working rolls 10 are located at different depths in the frame.
[0040] In certain embodiments provided in this application, the length direction of the connecting structure 3 may also form a certain angle with the axial direction of the working roll 10. This application does not impose any limitation on this.
[0041] In some embodiments provided herein, the connection structure 3 includes:
[0042] The strip portion 33 has a connecting end 31 at one end thereof and is connected to the telescopic end 21. The U-shaped portion 34 is connected to the other end thereof and is spaced apart from the telescopic end 21. The U-shaped portion 34 has clamping ends 32 at both ends thereof for clamping onto the peripheral wall of the annular groove 101.
[0043] The connecting structure 3 includes a strip portion 33 connecting the telescopic end 21 and the U-shaped portion 34. The strip portion 33 serves as a transition and support. The ends of the U-shaped portion 34 can be clamped against the peripheral wall of the annular groove 101 to clamp the work roll 10. This facilitates operation, and the U-shaped structure has a low manufacturing cost. Furthermore, this clamping method has little impact on the bottom surface or sidewalls of the annular groove 101, effectively ensuring the surface quality of the work roll 10 in which the annular groove 101 is located, thereby ensuring the rolling effect. Even if the size of the U-shaped portion 34 does not fully match the size of some work rolls 10, for work rolls 10 whose dimensions are smaller than the distance between the ends of the U-shaped portion 34, the U-shaped portion 34 can still pull the work roll by contacting the sidewalls of the annular groove 101, thus providing good versatility.
[0044] In some embodiments provided herein, the strip portion 33 may include:
[0045] The first section 331 is connected to the telescopic end 21 and has a constant extension direction. The second section 332 is connected to a side of the first section 331 away from the telescopic end 21 and has a curved extension direction.
[0046] The strip portion 33 is configured to include a first section 331 with a constant extension direction and a second section 332 with a bend in the extension direction. The first section 331 can effectively extend the length, and the second section 332 can extend the length while enhancing the support strength.
[0047] In some embodiments provided herein, an angle is formed between the length direction of the strip portion 33 and the plane of the U-shaped portion 34. This facilitates the strip portion 33 to transmit the force to the U-shaped portion 34, and provides a good connection strength between the strip portion 33 and the U-shaped portion 34.
[0048] In some embodiments provided in this application, the strip portion 33 may be configured as a tube, and the U-shaped portion 34 may be configured as a plate. This application does not impose any restrictions on this.
[0049] In some embodiments provided in this application, the connection structure 3 is a tubular structure.
[0050] The tubular connection structure 3 reduces its overall weight and facilitates its fabrication and connection. When the tubular connection structure 3 is constructed, the U-shaped portion 34 can be a U-shaped tube, and the strip-shaped portion 33 can be a strip-shaped tube. This overall structure is easy to fabricate while also providing sufficient strength for use. This application does not impose any restrictions on this.
[0051] In certain embodiments provided in the present application, the connection structure 3 may also be a columnar or solid structure, and a structure with one end configured as a buckle may also achieve clamping of the annular groove 101 , which is not limited in the present application.
[0052] In some embodiments provided herein, the telescopic end 21 is plug-connected to the connecting end 31 , which facilitates connection and replacement of the telescopic end 21 and the connecting end 31 .
[0053] In certain embodiments provided herein, the connection may be a mortise and tenon connection or a hole-and-shaft connection. The telescopic end 21 may be provided with a vertical insertion hole 211, into which the connecting end 31 along the length of the strip portion 33 may be inserted to achieve connection. This application does not impose any restrictions on this.
[0054] In certain embodiments provided in the present application, a vertical socket 211 may be provided on the telescopic end 21. When the strip portion 33 is a strip tube and the strip portion 33 includes a second section 332, the first section 331 and the second end are both tubular, and the second section 332 may be a rectangular tube with an open side, and one end of the rectangular tube is inserted downward into the socket 211 on the telescopic end 21. The direction in which the telescopic end 21 reciprocates and contracts may be horizontal. This connection method is convenient for the staff to operate, and the end of the second section 332 can be moved downward to insert it into the socket 211. The telescopic end 21 is horizontally telescopic and the socket 211 is vertical, which makes it easier to push the second section 332 and the strip tube described in the second section 332 when the telescopic end 21 moves.
[0055] In certain embodiments provided in the present application, the telescopic end 21 and the connecting end 31 may also be connected by fasteners or fixed by welding, and the present application does not impose any limitation on this.
[0056] Figure 3 For the structural diagram of the telescopic structure provided in this application, refer to Figure 3 In some embodiments provided herein, the telescopic structure 2 includes a telescopic cylinder, which includes a cylinder base 22 and a telescopic rod 23 telescopically inserted into the cylinder base 22, with the end of the telescopic rod 23 away from the cylinder base 22 forming a telescopic end 21. This is easy to implement and has low production costs.
[0057] In certain embodiments provided in the present application, the telescopic structure 2 may also be a cylinder, a hydraulic cylinder, or an axially telescopic servo motor, and the present application does not impose any limitation on this.
[0058] In some embodiments provided herein, the telescopic structure 2 is detachably connected to the lifting platform 11 , which facilitates installation and adjustment of the telescopic structure 2 .
[0059] In some embodiments provided in the present application, the telescopic structure 2 and the lifting platform 11 can be fastened together by bolts.
[0060] In certain embodiments provided herein, the lifting trolley 1 may further include a lifting cylinder 12, a base plate 13, and rollers (not shown). The two ends of the lifting cylinder 12 are connected to the lifting platform 11 and the base plate 13, respectively. The base plate 13 is placed on the ground, and the lifting cylinder 12 is extended and retracted relative to the base plate 13 to achieve a change in the position of the lifting platform 11 at the other end of the lifting cylinder 12. This facilitates the placement and use of the lifting trolley 1. The rollers can be set on the side of the base plate 13 close to the ground to enable the entire lifting trolley 1 to move. This facilitates the movement of the lifting trolley 1.
[0061] refer to Figure 1 It can be seen that the present application also provides a working roll assembly, comprising:
[0062] Roll changing device as described above.
[0063] The working roll 10 of the Sendkimir rolling mill has an annular groove 101 on the peripheral wall of one end of the working roll 10 for clamping with the clamping end 32.
[0064] The specific structure of the roll changing device and its corresponding technical effects can be found in the above text and will not be described in detail here. An annular groove 101 is provided on the peripheral wall of one end of the working roll 10 to facilitate the cooperation and movement between the working roll 10 and the roll changing device.
[0065] It should be noted that the annular groove 101 at one end of the work roll 10 does not affect the rolling process of the work roll 10 .
[0066] In some embodiments provided herein, the bottom surface of the annular groove 101 of the working roll 10 is covered with a high-temperature resistant layer (not shown in the figure), which can effectively protect the surface of the working roll 10 and the annular groove 101 without affecting the rolling of the working roll 10.
[0067] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.
[0068] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.
Claims
1. A roller changing device, characterized in that: Used to replace the working rolls of the Sendkimir rolling mill, the peripheral wall of one end of the working roll is provided with an annular groove, and the roll changing device includes: A lifting trolley is provided with a lifting platform that can be raised or lowered; A telescopic structure connected to the lifting platform and provided with a telescopic end that reciprocates and telescopes along the axial direction of the working roll; A connecting structure is located between the telescopic end and the working roller. The connecting structure is provided with a connecting end and a clamping end. The connecting end is connected to the telescopic end. The clamping end is used to clamp the annular groove to clamp the working roller.
2. The roller changing device according to claim 1, characterized in that: The connection structure includes: A strip-shaped portion, one end of which in the length direction forms the connecting end and is connected to the telescopic end; The U-shaped portion is connected to the other end of the strip portion in the length direction and is spaced apart from the telescopic end. Both ends of the U-shaped portion form the clamping ends to be clamped on the peripheral wall of the annular groove.
3. The roller changing device according to claim 2, characterized in that: The strip portion includes: A first section connected to the telescopic end, wherein the extension direction of the first section remains unchanged; The second section is connected to a side of the first section away from the telescopic end, and an extension direction of the second section is bent.
4. The roller changing device according to claim 2, characterized in that: There is an angle between the length direction of the strip portion and the plane where the U-shaped portion is located.
5. The roller changing device according to any one of claims 1 to 3, characterized in that: The connecting structure is a tubular structure.
6. The roller changing device according to any one of claims 1 to 3, characterized in that: The length direction of the connecting structure is the axial direction of the working roll.
7. The roller changing device according to any one of claims 1 to 3, characterized in that: The telescopic end is plug-connected to the connecting end.
8. The roller changing device according to any one of claims 1 to 3, characterized in that: The telescopic structure includes a telescopic cylinder, which includes a cylinder seat and a telescopic rod telescopically inserted into the cylinder seat, and an end of the telescopic rod away from the cylinder seat forms the telescopic end.
9. The roller changing device according to any one of claims 1 to 3, characterized in that: The telescopic structure is detachably connected to the lifting platform.
10. A working roll assembly, characterized in that: include: The roller changing device according to any one of claims 1 to 9; The working roll of the Sendkimir rolling mill has a peripheral wall at one end provided with an annular groove for clamping with the clamping end.